How did you get involved? Was it a whirlwind romance? Were there any early warning signs that maybe you glossed over? It's easy to blame oneself, but don't. Often it's 20/20 hindsight! We see all the early red flags after the fact, OR we see them while they happen and feel it may not be right, but we give them a chance anyways. I have done that multiple times myself with many truly sick people. Don't be so hard on yourself.... try to learn from it instead.... what can you learn about this experience, yourself and the kinds of traits and behaviors you need to avoid?